Contra 4

Side-scrolling run-and-gun shooter where two mercenaries fight an alien invasion across dual-screen levels. You sprint through military installations and alien strongholds, dodging projectile patterns while mowing down waves of enemies. The game uses both DS screens simultaneously—bosses tower across the full vertical space, and you'll grapple between screens mid-combat. Expect precise platforming over bottomless pits, weapon pickups that alter your firepower (spread shot, laser, homing missiles), and relentless difficulty that demands pattern memorization. Levels scroll horizontally and vertically, throwing environmental hazards at you alongside the alien hordes. Checkpoints are sparse. You die in one hit unless you've grabbed a shield power-up. Co-op mode lets a second player join the chaos. This is for players who want their reflexes tested and don't mind repeating sections until muscle memory kicks in.